Abstract: A vent cover system covers a gap between an appliance and a back wall. The vent cover system includes a gap plate securable across the countertop opening against the back wall, and a vent plate securable across the countertop opening and engaging the gap plate. A position of the vent plate is adjustable relative to the gap plate. The gap plate and the vent plate cover the gap between the appliance and the back wall. A cooktop for an appliance mounted in a countertop of a recreational vehicle includes the vent cover system.

Abstract: A method of managing a combi radiator (1), the method comprising the following steps that are repeated for each current day, and for each current period taken from a predetermined set constituted by at least one successive period defined in the current day: acquiring a predetermined indication from a predefined table (30), said predetermined indication being associated with said current period and being taken from a list comprising a first indication for which only the electrical radiator system (2) is to be activated, and/or a second indication for which only the hot-water radiator system (3) is to be activated, and/or a third indication for which both the electrical radiator system and the hot-water radiator system are to be activated; controlling the radiator as a function of the predetermined indication.

Abstract: A personal and portable misting device having at least a pump unit operatively coupled to an inlet tube and an outlet tube with a misting nozzle attached to the outlet tube is described. The inlet tube includes a distal end that is to be coupled to a water source. The distal end has a plug attached to it that is designed to be received in the end of a drain spout of a hard-sided cooler to utilize the melted ice-water typically contained in the cooler as the water source.

Abstract: A central medical suite system includes a modular air handling device configured to distribute airflow throughout the central medical suite system and at least one of: a modular air return device, a modular patient lift system, a lighting and air distributing unit, a room perimeter disinfecting system. The central medical suite system further includes an electronic control module configured to control the airflow from the modular air handling device and control one or more environmental remediation devices provided on at least one of the modular air handling device, the modular air return device, the modular patient lift system, the lighting and air distributing unit, and the room perimeter disinfecting system.

Abstract: Methods of increasing heating and cooling system airflow, output capacity and operational efficiency are provided. The method includes steps for replacing restrictive air filter systems with less restrictive air-filter systems allowing for HVAC systems to operate within manufacturer's design specifications and achieve optimized performance. Steps include assembling and installing air filter access panels, and filter retention devices into existing HVAC ductwork systems to accommodate larger, less restrictive filters. Heating and cooling capacity and efficiency is determined as a function of system parameters, comprising elements such as: gas combustion efficiency, supply airflow and return airflow temperature and humidity, blower-motor airflow volume and electricity consumption, ductwork static-pressure, and refrigerant pressure and temperature.

Abstract: An air treatment device is disclosed. The air treatment device includes an air duct configured to deliver an air flow. A first filter stage is included and comprises at least one air filter arranged in the air duct for filtering the air flow. At least a second filter stage is also included and comprises at least one further air filter and is arranged downstream of the first filter stage (for filtering the air flow after having passed the first filter stage. The second filter stage is controllable between at least two states with different filtration efficiencies, whereby, with respect to a filtration efficiency in the first state, a filtration efficiency in the second state is lower, in particular the filtration efficiency in the second state is essentially zero. An air quality sensor is also present, the sensor allowing for measuring the air quality of the air flow in between the first and the second air filter stages.

Abstract: An air purifying apparatus includes an outer inlet which forms a flow path through which external air flows into the air purifying apparatus, an inner inlet which forms a flow path through which internal air flows into the air purifying apparatus, an outer outlet which forms a flow path through which air inside the air purifying apparatus is discharged to the outdoors, a charge part configured to ionize particles in the air flowing into the air purifying apparatus, a heat exchange dust collector configured to perform heat exchange between the air flowing into through the outer inlet and the air flowing into through the inner inlet, collect the ionized particles, and treat air inside the air purifying apparatus, and an inner outlet which forms a flow path through which the treated air is discharged into the indoors.

Abstract: A liquid diffuser system includes a housing with one or more electrical components configured to selectively release a singular air mixture from multiple atomized sources for dispersing throughout multiple individually distinct and separate rooms simultaneously. The system includes an air pump to collect and pressurize air for passage into multiple bottles, each of which contain a liquid for atomization and mixture with the air. A splitter is used to combine the air from each bottle into a singular air mixture for releasing to the environment. The system may also include an air sensor located within a duct of an HVAC system for dispersing the air into the duct work. The liquid diffuser system may include the HVAC system and duct work. The system may also be regulated through a remote electronic device.

Abstract: An air-conditioning lighting control system includes air-conditioning control circuitry configured to control an air-conditioning apparatus on the basis of an air-conditioning map indicating an air-conditioning target space and the air-conditioning apparatus provided in the air-conditioning target space, lighting control circuitry configured to control a lighting device on the basis of a lighting map indicating an illuminating target space and the lighting device provided in the illuminating target space, centralized control circuitry configured to communicate with the air-conditioning control circuitry and the lighting control circuitry and make the air-conditioning apparatus and the lighting device work in conjunction with each other on the basis of linkage information, which is set in advance, and in which the air-conditioning apparatus and the lighting device are linked with each other, and detection circuitry configured to detect that there is a setting error in the air-conditioning map, the lighting map

Abstract: Provided are embodiments for a wireless gateway device for a heating, ventilation, and air conditioning (HVAC) system for providing sensor information and sensor communication over relay-controlled power line. The wireless gate device includes an input/output (I/O) interface, a communication unit, and a controller. The controller is communicably coupled with the I/O interface and the communication unit. The controller is configured to receive operational data from at least one of one or more sensors and a thermostat of the HVAC system over the power line. The controller is also configured to control one or more components of the HVAC system based on the operational data associated with the HVAC system. The controller can also transmit the operational data to a remote server.

Abstract: A device control system includes: a wireless device including a device to be controlled and external connector that is connected to the device to be controlled, transmits/receives information to/from the device to be controlled, and is wirelessly connected to a wireless LAN router; a handheld operation terminal that includes a display unit for displaying information and operates the device to be controlled; and a wireless operation terminal that is a terminal different from the handheld operation terminal and operates the device to be controlled via the external connector. When the wireless device receives, from the handheld operation terminal, an information acquisition request for first information that is information necessary for connecting the wireless operation terminal to the external connector, the wireless device selectively transmits the first information to the handheld operation terminal, and the display unit displays the first information.

Abstract: The present invention relates to a system for diagnosis and management of indoor air quality, and more particularly to a system for diagnosis and management of indoor air quality which is capable of obtaining and analyzing air quality data by measuring the indoor air quality of a vehicle or accommodation space and of detecting smoking or non-smoking, the type of smoking, and an abnormal situation by diagnosing at least one of indoor smoking and smoking types. In addition, the present invention relates to a technology for facilitating the management of accommodation by efficiently diagnosing indoor air quality.

Abstract: An air-conditioning apparatus includes configured to, when a cooling operation mode is changed into one of multiple dehumidifying operation modes, select the one of the multiple dehumidifying operation modes on the basis of a value of a sensible heat ratio difference ?SHF that is a difference between a target sensible heat ratio acquired from an indoor temperature detected by an indoor temperature sensor, a target indoor temperature, and target indoor humidity and a theoretical minimum possible sensible heat ratio acquired from enthalpy of an indoor air, enthalpy of blown air from the indoor unit when relative humidity is 100%, and enthalpy of sensible heat.

Abstract: An air-sending device includes a fan configured to blow air into a space, an airflow direction adjusting unit configured to adjust an airflow direction of the air blown out from the fan, and a controller configured to control the fan and the airflow direction adjusting unit. The controller is configured to, when a predetermined condition is met, execute a forced swing mode regardless of a setting made by a user for the airflow direction. In the forced swing mode, a swing operation is forcibly performed in which the airflow direction adjusting unit is controlled to change the airflow direction over time.

Abstract: A method is provided for controlling an HVAC system. The method includes receiving zone priority levels and zone temperature setpoints, where at least one of the zones haves a higher priority level than others of the zones, receiving an indication of zone ambient temperature values, determining requested zone capacity values to maintain the zone ambient temperature values within a threshold deviation of respective ones of the zone temperature setpoints, determining target zone capacity values from the requested zone capacity values and zone size values, and from the zone priority levels where the target zone capacity values may be responsive to a total of the requested zone capacity values that is less than a minimum capacity or greater than a maximum capacity of the HVAC system, and causing the HVAC system to provide the conditioned air to the zones according to respective ones of the target zone capacity values.

Abstract: A refrigeration cycle apparatus includes an indoor unit provided with a first air inlet and a second air inlet; a first heat exchange unit located in a first air flow passage connecting the first air inlet and an air outlet; a second heat exchange unit located in a second air flow passage connecting the second air inlet and the air outlet, the second heat exchange unit being connected to the first heat exchange unit such that the second heat exchange unit is positioned downstream of the first heat exchange unit during heating operation; a first damper capable of adjusting an amount of air entering from the first air flow passage to the second air flow passage; and a second damper provided at the second air inlet and capable of adjusting an amount of air to be sucked from the second air inlet.

Abstract: The control unit causes a heater to operate when a temperature of a supply air flow is equal to or lower than a first temperature threshold, the temperature of the supply air flow being measured by an outdoor air temperature sensor while an air supply blower and an exhaust blower are in operation and the heater is stopped; and controls a protective operation mode when a temperature of the supply air flow is equal to or lower than a second temperature threshold, the protective operation mode being a mode in which the air supply blower is intermittently operated or is stopped and the exhaust blower continues operation, the temperature of the supply air flow being measured by the outdoor air temperature sensor after the heater is caused to operate.

Abstract: The present heating, ventilation and air conditioning (HVAC) air conveyance apparatus is plurality of panels adapted to be field-assembled to form the conveyance apparatus. These panels include a pair of first quadrilateral panels, each defining a right-angle flange extending from each of a pair of opposite edges and a pair of second quadrilateral panels, each defining a hemmed cleat along each of a pair of opposite edges. Each hemmed cleat is shaped and dimensioned to receive one of the first quadrilateral panel right-angle flanges to form the HVAC air conveyance apparatus. Also, HVAC unit mating flanges extending from each other edge of each of the first quadrilateral panels and/or from each other edge of each of the second quadrilateral panels, such that at least a pair of opposed peripheral HVAC unit mating flanges extend from each end of the HVAC air conveyance apparatus.

Abstract: A fastener includes a stud having a central axis and a head. The head includes a first end engageable with the stud, a second end opposed from the first end, and a bore between the first end and the second end having a central axis.

Abstract: An air redirect apparatus includes a duct configured to fit into a register access cavity. The duct includes an entrance aperture and exit aperture. The entrance aperture is sized to connect to a duct opening of ductwork which routes forced air into the register access cavity. A cover plate is connected to the entrance aperture through which the entrance aperture penetrates. The cover plate operable to cover the duct opening when the entrance aperture is connected to the duct opening. The cover plate has an adjustable length that is operable to be adjusted between a minimum length and a maximum length. The cover plate includes a first plate and a second plate. The second plate includes a cutout section configured to straddle an outer perimeter of the entrance aperture. The second plate is operable to slide longitudinally relative to the first plate to adjust the length of the cover plate.

Abstract: A ventilation fan includes a scroll formed to define an interior space, an inlet opening into the interior space, and an outlet opening into the interior space and spaced apart from the inlet. A fan wheel is coupled to the scroll within the interior space and includes a plurality of fan blades configured to rotate about a vertical rotation axis to draw air into the interior space to ventilate a room positioned adjacent to the ventilation fan. An inlet collar is coupled to an exterior surface of a bottom wall of the scroll and extends through the inlet. The inlet collar has a upper, distal end located above a lower end of each of the plurality of fan blades when the ventilation fan is installed above or adjacent to a ceiling of the building.

Abstract: When a main body case is viewed from below, an antenna is within a rectangular/square area defined by first to fourth points. An opening edge of a first opening includes: a first edge linearly along a first direction; and a second edge linearly along a second direction perpendicular to first direction, first point is defined as an intersection of a first straight line and a second straight line, first straight line includes first edge, and second straight line includes second edge. Second point is defined as a point apart from first point in first direction by a distance that is half prescribed wavelength. Third point is defined as a point apart from second point in second direction by a distance that is half prescribed wavelength. Fourth point is defined as a point apart from first point in second direction by a distance that is half prescribed wavelength.

Abstract: The present invention relates to a heat exchanger module for an air-conditioning system or a heat pump system, which comprises a heat exchanger for cooling refrigerant, which is penetrated by a refrigerant channel for refrigerant, and a collector for drying and storing refrigerant, which is penetrated by a storage channel for refrigerant. It is substantial that the heat exchanger module, furthermore, comprises a coupling device equipped for the mechanical and fluidic connection of heat exchanger and collector, by way of which in the assembled state of the heat exchanger module, the heat exchanger is mechanically fixed to the collector and the refrigerant channel fluidically connected to the storage channel. Furthermore, the invention relates to a method for providing such a heat exchanger module and to a motor vehicle system having at least one such heat exchanger module.

Abstract: The present invention relates to a heat exchanger module having a collector and a heat exchanger. It is substantial for the invention that on a connecting flange of the collector at least one groove equipped for conducting refrigerant is provided. Further, the invention relates to a motor vehicle having at least one such heat exchanger module.

Abstract: A water heater assembly for a recreation vehicle is provided. The water heater the assembly includes a tank including an interior configured to hold water within the tank. The tank includes an inlet opening configured to receive a first flow of fluid from an input conduit fluidly connecting a bypass valve to the tank. The tank includes an outlet opening configured to egress the first flow of fluid to a junction. A one-way valve is positioned fluidly between the outlet opening and the junction. A bypass conduit fluidly connects the bypass valve to the junction.

Abstract: A fluid heating system for heating a production fluid using a thermal transfer fluid, the production fluid being contained in a vessel includes an electric blower configured to receive ambient air and electrical input power and to provide output source air, a combustion system configured to receive the source air from the electric blower and to receive fuel and to provide the thermal transfer fluid, a heat exchanger configured to receive the thermal transfer fluid from the combustion system and configured to provide heat exchange from the thermal transfer fluid to the production fluid, and to provide output exhaust gas, and wherein the electric fan provides a predetermined volume flow rate of the output source air at a predetermined blower efficiency such that the fluid heating system has a Bulk Heat Flux of at least about 14.7 kBTU/Hr/ft2 and a Pressure Drop of at least about 0.7 psi.

Abstract: A PTC heating element for an electric heater having a PTC element, an electrode formed on a surface of the PTC element for electrically contacting the PTC element, at least one additional contact for electrically connecting the electrode of the PTC element, and a carrier layer. The carrier layer is electrically insulating, the thickness of the PTC element is ?500 ?m, and the installation height of the PTC heating element is between 500 ?m and 2500 ?m. Also disclosed is an electric heater and use of the PTC heating element in a motor vehicle.

Abstract: A storage type heat pump hot water supplying apparatus includes: control circuitry to control a compressor frequency and a pump rotational speed, the compressor frequency being an operating frequency of the compressor, the pump rotational speed being a rotational speed of a water pump. The control circuitry is configured to control, in a heat accumulating operation for accumulating hot water in the hot water storage tank, the pump rotational speed so that the actual hot water discharge temperature becomes equal to a target hot water discharge temperature. The heat accumulating operation includes a first operation and a second operation after the first operation. The compressor frequency in the first operation is higher than the compressor frequency in the second operation. The target hot water discharge temperature in the first operation is lower than the target hot water discharge temperature in the second operation.

Abstract: A water heater for a recreation vehicle and method for control are provided. The water heater includes a tank including a plenum configured to hold water within the tank. A flue forms a flowpath including an inlet opening and an outlet opening. A flow control device is positioned to selectively allow flow through the outlet opening from the flowpath. The flow control device forms a closed position and an open position. A motor is operably coupled to the flow control device and configured to articulate the flow control device to the closed position and the open position.

Abstract: A controller for a painting assembly is provided. The controller includes at least one processor to set a threshold temperature to heat components of the painting assembly. The threshold temperature is set based on a carbon footprint in the painting assembly. The processor controls a first heater to generate the heat for a first duration for the components of the painting assembly. The first duration is determined based on the set threshold temperature. The processor compares a temperature of the components of the painting assembly with the set threshold temperature to determine a state of heat of the components of the painting assembly. The processor further controls a second heater to generate the heat for a second duration for the components of the painting assembly. The second duration is determined based on the comparison.

Abstract: A liquid to air switching flow system includes a switching flow apparatus within a housing and a source loop and a production loop that are in fluid communication with the switching flow apparatus. The production loop includes a heating/cooling coil that includes a coil input that receives fluid the switching flow apparatus and a coil output that returns fluid to the switching flow apparatus. In a heating mode a first heat exchanger, acting as a condenser, is fluidly connected to the production loop to provide heated liquid to the heating/cooling coil. In a cooling mode, a second heat exchanger, acting as an evaporator, is fluidly connected to the production loop to provide cooled liquid to the heating/cooling coil. A fan is positioned within the housing to push air across the heating/cooling coil to heat the air in the heating mode or cool the air in the cooling mode.

Abstract: A refrigeration cycle apparatus includes a main circuit and a bypass circuit. The main circuit includes: a compressor; a first condenser; a first refrigerant-to-refrigerant heat exchanger; a first expansion device; a first branching portion; a first evaporator; a third branching; and a fourth branching portion. The bypass includes: a second expansion device; the first refrigerant-to-refrigerant heat exchanger; and a second branching portion. The second branching portion includes a liquid outflow pipe and a gas outflow pipe. The liquid outflow pipe defines one outlet for the refrigerant and is located below the gas outflow pipe. The gas outflow pipe defines another outlet for the refrigerant and is located above the liquid outflow pipe. The one outlet of the second branching portion communicates with the third branching portion. The other outlet of the second branching portion communicates with the fourth branching portion.

Abstract: A cooling subsystem of a fuel cell assembly that employs the Rankine cycle to use the potential energy of a thermally pressurized fluid to generate electrical power. Waste heat from a fuel cell stack is transferred to working fluid in a heat exchanger. The working fluid in the condensed phase is pressurized, evaporated in a boiler or evaporator, and then fed to an expansion turbine which in turn provides rotary motion to an electric generator to generate useful electrical power. The fluid leaves the turbine as a lower pressured vapor, and is then condensed back to a fluid and pumped back to the evaporator to repeat the process.

Abstract: A compressor main body container includes a main shell having a vertical cylindrical shape, a top shell having a cup shape, and a bottom shell having a cup shape, and an interior portion of the main shell is hermetically sealed by securing an opening side of the top shell to an upper end portion of the main shell at a first welded portion by welding, and securing an opening side of the bottom shell to a lower end portion of the main shell at a second welded portion by welding. The accumulator container includes an accumulator shell having a cup shape, and an interior portion of the accumulator shell is hermetically sealed by securing an opening side of the accumulator shell to an opposite opening side of the bottom shell at a third welded portion by welding at a position lower than a position of the second welded portion in the compressor main body container.

Abstract: A system for using recycled water to cool a condenser includes a water reclamation source. A water cooled condenser receives the recycled water. The received water has a first temperature. A second water at a second temperature, greater than the first temperature, is input to the water cooled condenser. The condenser heats the recycled water with the refrigerant to a third temperature greater than the first temperature and less than the second temperature, and inputs recycled water at the third temperature to the water reclamation source and lowers the temperature of the refrigerant to a fourth temperature less than the second temperature.

Abstract: A heating, ventilation, and/or air conditioning (HVAC) unit includes a first sensor disposed adjacent to an inlet of an evaporator configured to receive an airflow. The HVAC unit includes a second sensor disposed adjacent to an outlet of a reheat coil positioned downstream of the evaporator and configured to expel the airflow. The HVAC unit also includes a controller configured to regulate operation of a modulating reheat valve to adjust flow of a working fluid in thermal communication with the airflow to control a difference between a measurement of the first sensor and a measurement of the second sensor.

Abstract: A refrigeration cycle apparatus includes a heat source side unit, a relay unit, and a plurality of load side units, the heat source side unit and the relay unit are connected by using a low-pressure pipe and a high-pressure pipe, and the relay unit and each of the plurality of load side units are connected by using a corresponding liquid branch pipe and a corresponding gas branch pipe. The heat source side unit includes a compressor configured to compress refrigerant, at least one flow switching valve configured to change a passage of refrigerant based on an operation mode, and at least one heat source side heat exchanger, and the relay unit includes six-way valves or pairs of four-way valves.

Abstract: A cooling system disclosed herein includes a first system flow passage, a second system flow passage, and a reserve tank. The reserve tank includes a first chamber, a second chamber, a third chamber and fourth chamber and an intermediate chamber. A first inflow port is opened into the first chamber, a first outflow port is opened into the second chamber, a second inflow port is opened into the third chamber, and a second outflow port is opened into the fourth chamber. The first chamber and the second chamber communicate, the third chamber and the fourth chamber communicate, and the first chamber communicates with the third chamber through the intermediate chamber. The first system flow passage is connected to the first inflow port and the first outflow port, and the second system flow passage is connected to the second inflow port and the second outflow port.

Abstract: One aspect of the invention provides a composite refrigeration line set including: at least one selected from the group consisting of: a suction line and a return line. One or more of the suction line and the return line are a composite refrigeration line set tube including: an inner plastic tube; a first adhesive layer positioned about the inner plastic tube; an aluminum layer positioned about the first adhesive layer and coupled to the inner plastic tube via the first adhesive layer; a second adhesive layer positioned about the aluminum layer; and an outer plastic layer positioned about the aluminum layer coupled to the aluminum layer via the second adhesive layer. The inner plastic tube is polyethylene-fiberglass composite. The outer plastic tube is polyethylene-fiberglass composite. The aluminum layer includes an alloy selected from the group consisting of AL 3004-O, AL 3005-O, and AL 3555-O.

Abstract: A gas-liquid separator and a compression system are provided. An outer cylinder, a filter assembly, a bracket and a one-way valve are arranged in the gas-liquid separator, an upper part of the outer cylinder is provided with an inlet, and a lower part of the outer cylinder is provided with an outlet; the filter assembly is arranged in the outer cylinder, and the filter assembly is provided with a valve port; the bracket is arranged below the filter assembly; and the one-way valve is arranged on the bracket, at least part of a structure of the one-way valve is located below the filter assembly, and at least part of the structure of the one-way valve is movably, wherein when a pressure difference between a region above the valve port and a region below the valve port reaches a predetermined value, the valve port is opened.

Abstract: A fluid collector having a housing having a tubular circumferential wall with a first end face having a first opening and with a second end face having a second opening, which is situated opposite the first opening of the first end face, a first cover being provided, which closes the first opening on the first end face, and a second cover being provided, which closes the second opening on the second end face. The tubular circumferential wall has an area with an, in particular, planar connecting surface, on which at least one flange element is arranged and fastened as a connecting element, at least one bore or one channel being provided in the area having the connecting surface, which fluidically connects the interior of the housing to the at least one connecting element.

Abstract: An air conditioner may include a controller; a compressor; an outdoor heat exchanger; a plurality of indoor heat exchangers; a switching valve that selectively guides a refrigerant discharged from the compressor to the outdoor heat exchanger or the plurality of indoor heat exchangers; high pressure pipes that connect the switching valve and the plurality of indoor heat exchangers; high pressure valves installed in the high pressure pipes; low pressure pipes that connect an inlet of the compressor and the high pressure pipes. low pressure valves installed in the low pressure pipes; indoor pipes, which are opposite to the high pressure pipes with respect to the plurality of indoor heat exchangers and connected to the plurality of indoor heat exchangers; indoor expansion valves installed in the indoor pipes; a liquid pipe that connects the outdoor heat exchanger and the indoor pipes; and an outdoor expansion valve installed in the liquid pipe.

Abstract: An air conditioner and a control method of an air conditioner are provided. The air conditioner includes an outdoor unit, an indoor unit, a refrigerant circulation loop, and a controller. The controller is configured to determine whether the air conditioner is operating in a cooling mode; obtain a first target supercooling degree in a first standard condition if it determined that the air conditioner is operating stably in the cooling mode; convert a supercooling degree in a current condition into a supercooling degree in the first standard condition; obtain a first refrigerant amount difference according to the first target supercooling degree, the supercooling degree in the first standard condition, an outdoor unit internal volume in the first standard condition, and an outdoor unit internal volume in the current condition; and determine a refrigerant amount of the air conditioner according to the first refrigerant amount difference.

Abstract: Method (100) for controlling the operation of a refrigerator (1) comprising: a cabinet (2) defining a refrigeration and/or freezing area; an isolating door (3) that opens and closes the refrigeration and/or freezing area of the cabinet (2); a door opening sensor (31); and a cooling system (5) configured to modify the temperature of the refrigeration and/or freezing area; the method (100) comprising the steps of: monitoring the opening and closing of the door (31) by means of the door opening sensor (31) during a determined period; generating (206) a door opening probability distribution (206a) at the time monitored in the previous step; and maintaining or modifying the operation of the cooling system (5) according to the door opening probability distribution (206a).

Abstract: An air conditioner may include a controller; a compressor that compresses a refrigerant; an outdoor heat exchanger through which the refrigerant discharged from the compressor flows; a plurality of expansion valves that expands the refrigerant passed through the outdoor heat exchanger; a plurality of indoor heat exchangers through which the refrigerant passed through the plurality of expansion valves flows; a plurality of connection pipes that connects the plurality of indoor heat exchangers and the compressor; and a plurality of variable valves installed in the plurality of connection pipes. An opening degree of each of the plurality of variable valves may be adjustable via the controller.

Abstract: The present disclosure provides a control method, apparatus, and device for a compressor, a storage medium, and a refrigerator system. The control method includes: obtaining an electrical parameter, a return air parameter, and a first frequency of the compressor during operation of the compressor; determining a first fitting formula corresponding to the first frequency; obtaining an exhaust pressure by inputting the electrical parameter and the return air parameter into the first fitting formula for calculation; and controlling the compressor based on the exhaust pressure. In this way, the pressure sensor disposed on an exhaust side of an air conditioner can be omitted, hence cost is saved; or for the air conditioner with the pressure sensor on the exhaust side, the above manner for calculation can be an alternative to obtaining the exhaust pressure, which ensures a user's normal use and thus improves the user experience.

Abstract: A refrigerator includes a first tray assembly defining a portion of an ice making cell, a second tray assembly defining another portion of the ice making cell, a heater disposed adjacent to at least one of the first and second tray assemblies, and a controller configured to control the heater. The refrigerator further includes a pusher having a first edge pressing the ice or at least one of the first and second tray assemblies to separate the ice from the tray assemblies, a bar extending from the first edge, and a second edge disposed at the end of the bar. The second tray assembly includes a first coupling part connected to the pusher and a second coupling part connected to the driver. The controller moves at least one of the pusher and the second tray assembly to change a relative position between the pusher and the second tray assembly.

Abstract: Artificial snowmaking equipment, preferably indoor, comprises a refrigerating cylinder rotating about a longitudinal axis; movement means configured to rotate the refrigerating cylinder; a cooling unit configured to cool an outer side wall of the refrigerating cylinder to a freezing temperature; a water supply system configured to wet at least part of the outer side wall so as to create a layer of ice thereon; at least one scraper device configured to scrape at least part of the ice layer so as to obtain an artificial snow fall. In particular, the refrigerating cylinder internally has a gap extending along an inner surface thereof opposite the outer side wall. The gap is connected to the cooling unit so as to receive a flow of a refrigerating substance to be conveyed therein to cool the outer side wall of the refrigerating cylinder.

Abstract: A cryogenic system comprising a first cryogenic stage and a second cryogenic stage. A first signal line passing from the first cryogenic stage and is connected to a superconducting thermal break in the second cryogenic stage. A second signal line connecting the superconducting thermal break to a cryogenic device.

Abstract: A refrigerator includes a cold air supply duct that branches to two independent cold air supply flow paths such that the cold air supply duct supplies cold air for two independent partitioned storages.